<template>
  <div>
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <div ref="main" style="width: 700px;height:500px;"></div>
    </el-card>
  </div>
</template>

<script>
import echarts from "echarts";
import _ from "lodash";

export default {
  name: "reports",
  data() {
    return {
      options: {
        title: {
          text: "用户来源"
        },
        tooltip: {
          trigger: "axis",
          axisPointer: {
            type: "cross",
            label: {
              backgroundColor: "#E9EEF3"
            }
          }
        },
        grid: {
          left: "3%",
          right: "4%",
          bottom: "3%",
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: "value"
          }
        ]
      }
    };
  },
  async mounted() {
    //获取折线图数据
    var myChart = echarts.init(this.$refs.main);
    const { data: res } = await this.$axios.get("reports/type/1");
    if (res.meta.status !== 200)
      return this.$message.error("初始化折线图失败！");
    const data = _.merge(res.data, this.options);
    // const data = { ...res.data, ...this.options }; es6解构赋值
    // 绘制图表
    myChart.setOption(data);
  }
};
</script>

<style scoped>
.el-card {
  margin-top: 20px;
}
</style>